Gas Tests

Question 1

Oxygen

Answer 1

Glowing wooden splinter near the mouth of test tube filled w the gas

Glowing wooden splinter relights

Question 2

Hydrogen

Answer 2

Lighted wooden splinter near the mouth of test tube

Pop sound is produced

Question 3

CO2

Answer 3

Pass the colourless gass through limewater

Limewater turns cloudy

Question 4

Ammonia

Answer 4

Moist red litmus paper near the mouth of test tube

Red litmus paper turns blue

Question 5

Chlorine

Answer 5

Moist blue litmus paper near the mouth of test tube

Blue litmus paper turns red and then is bleached

Question 6

Hydrogen Chloride

Answer 6

Glass rod dipped in concentrated ammonia solution near the mouth of test tube

White fumes are formed

Question 7

Sulphur Dioxide

Answer 7

Pass colourless gas acidified Potassium Manganate (VII) or Dichromate (VI) solution

Purple solution turns colourless

Question 8

Nitrogen Dioxide

Answer 8

Moist blue litmus paper near the mouth of test tube

Moist blue litmus paper turns red